In the PSYCH 261 lecture today, the prof. mentioned synesthesia. It's a condition in which your sensory perceptions of objects become mixed. For example, some people see numbers as coloured, or automatically associate months with personalities. I'm not sure if I experience some of that or not; I expect everyone does to some extent.
Here is how I view the months of the year... every time I think about months, I see them arranged in this format.
I also used to associate emotions with letters and numbers (eg. f and 5 are angry, but b and 4 are calm), but that's faded somewhat over the years.